A campaign group has said it will seek to take its legal battle over plans to almost triple the size of the Wimbledon tennis site to the Court of Appeal after losing a High Court challenge.
Save Wimbledon Park (SWP) previously took legal action against the Greater London Authority (GLA) over its 2024 decision to grant planning permission for the expansion, but Mr Justice Saini dismissed the challenge last month.
The proposals, submitted by the All England Club, would see the construction of 38 new tennis courts and an 8,000-seat stadium on the grounds of the former Wimbledon Park Golf Club, allowing it to host Wimbledon qualifiers on-site.
On Friday, SWP said that it had asked the Court of Appeal for the green light to challenge the High Courtâs ruling, a decision it said had ânot been taken lightlyâ.
Jeremy Hudson, a director of SWP, said: âAbove all, this is a public interest case. Planning is ultimately concerned with whether a development is in the public interest.
âThe existence of rights of the public, imposed through the statutory trust and the restrictive covenants in the public interest, should plainly be very material to the planning decision.
âUnwanted development of public open spaces is proposed all over London: Wimbledon Park is just one example.â
Barristers for SWP told the High Court at a two-day hearing in early July that the decision to approve the plans was âirrationalâ and should be quashed.
They claimed that Wimbledon Park â a Grade II*-listed heritage site partly designed by Lancelot âCapabilityâ Brown â was covered by trusts and covenants governing how it could be used.
The GLA and the All England Club defended the challenge, with the court told that the restrictions were not âmaterialâ.
In a ruling, Mr Justice Saini found that the decision to approve the plans was âa planning judgment rationally exercised and having regard to appropriate and relevant factorsâ.
SWP said on Friday that it believed Mr Justice Saini âtook insufficient account of the statutory trust and the restrictive covenantsâ.
It continued that a decision on whether it could appeal against the ruling was expected later this year.
Among the groupâs supporters are comedian and writer, Andy Hamilton, and actress, Thelma Ruby.
Mr Hamilton said that the plans would come at âdevastating cost to the local environment and communityâ, while Ms Ruby said that the plans would âdesecrate a precious heritage landscapeâ.
The expansion proposals would see seven maintenance buildings, access points, and an area of parkland with permissive public access constructed, in addition to the courts and associated infrastructure.
They would also include work on Wimbledon Lake.
After Merton Council approved the plans, but Wandsworth Council rejected them, the Mayor of Londonâs office took charge of the application, but Mayor Sir Sadiq Khan recused himself from the process after previously expressing public support for the development.
Planning permission for the scheme was granted by Jules Pipe, Londonâs deputy mayor for planning, who said that the proposals âwould facilitate very significant benefitsâ which âclearly outweigh the harmâ.
Debbie Jevans, chairwoman of the All England Club, said at the time that the proposals would deliver 27 acres of ânewly accessible parkland for the communityâ.
Following the ruling, Sir Sadiq said that the decision would âcement Wimbledonâs reputation as the greatest tennis competition in the world and London as the sporting capital of the worldâ.